JP2001171786A - Intermediate size container made of metal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an intermediate size container made of metal, which has a high quality and is excellent in productivity and durability. SOLUTION: A cylindrical body 11 is formed by welding the side edges of a plurality of side plates 14 to each other, and a bottom plate 12 and a flange 13 are welded to the lower end and the upper end of the body 11 to form a container main body 10. This intermediate size container made of metal comprises the container main body 10 and a lid body 20 which is fixed to the flange 13 of the container main body 10 with a plurality of fixing bolts 17 and clamping nuts 18. In such an intermediate size container A made of metal, the side plates 14, the bottom plate 12, and the flange 13 to form the body 11 of the container main body 10 are formed in such a manner that the corner sections are formed into a curved surface shape having a roundness by pressing respectively.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a capacity 25 used for transporting and storing liquids, powders, solids, and the like.
It relates to a medium-sized metal container of 0 to 3000 liters.

[0002]

2. Description of the Related Art A medium-sized container is defined as a container having a capacity of 250 to 3000 liters and having a structure capable of loading and unloading by a machine according to the standard for transporting containers for liquids, powders, and solids.

[0003] For example, a medium-sized container having a capacity of 1,000 liters can store five drums of product in a space for four drums as compared with a drum having a capacity of 200 liters. Is reduced to 1/5 and labor costs can be reduced. In addition, since the structure of the container is required to be able to carry the machine by a forklift etc., the cargo handling time is short, the safety of work is high, and since it is recognized as a container, it can be stored and stored in factories and warehouses. .

[0004] At present, medium-sized containers in circulation include, for example, metal-made medium containers made of steel, stainless steel, aluminum and the like, and plastic medium-sized containers made of hard plastic and fiberboard. Metals can be used for a longer time than plastics, and can be recycled after use.

Conventionally, for example, in a rectangular metal medium container, a plurality of (for example, four) side plates made of flat metal plates are welded to each other at their side edges to form a rectangular cylindrical body. A bottom plate made of a flat metal plate having legs on the lower surface in a shape corresponding to the lower end opening of the body was welded to the lower edge of the body, and an angled flange was formed by welding on the outer periphery of the upper edge of the body. It comprises a container body, and a lid fixed to a flange of the container body so that the upper end opening of the container body can be opened and shielded.

[0006]

By the way, in the conventional metal medium-sized container, the side edges of the body side plate are corner-welded, and the bottom edge of the body side plate and the bottom plate are corner-welded. Therefore, the corners formed by the intersection of the side plates serving as the fuselage and the corners formed by the intersection of the bottom edge of the side plates and the bottom plate have sharp corners, and the contents tend to stagnate at each corner, and the liquid tends to remain. There are drawbacks such as corrosion due to pools and the like, and poor airtightness and cleanability.

The present invention has been made in view of the above-mentioned conventional drawbacks,
An object of the present invention is to provide a medium-sized container made of metal which is excellent in productivity and durability by standardized high-quality products while solving and removing this problem.

[0008]

According to the present invention, in order to achieve the above object, one or a plurality of side plates are welded to each other by a suitable welding method to form a cylindrical body. And a container body formed by welding a bottom plate and an angled flange to the lower and upper ends of the container body by an appropriate welding method, and fixed to the flange of the container body via a plurality of fixing bolts and fastening nuts. In a metal medium-sized container having a lid, a side plate serving as a body of the container main body and the bottom plate and the flange are each press-molded to form a corner portion into a rounded curved surface. It is a medium-sized metal container.

Further, in the present invention, in the above-mentioned metal medium-sized container, the bottom plate and the flange of the container main body are integrally formed by press molding, and are separately formed after press molding.

The present invention also provides a metal medium-sized container, wherein a reinforcing projection is formed in a curved surface on a side plate serving as a body of the container body, and the reinforcing projection causes heat generated at the time of welding. This is to prevent distortion and distortion due to pressure generated inside the container.

[0011] The present invention also provides the metal medium-sized container, wherein the lid has an engaging means (an engaging convex portion or an engaging concave portion).
And an engaging means (an engaging concave portion or an engaging convex portion) is formed on the leg member provided on the bottom plate of the container main body so as to face the engaging means of the lid. The engaging means and the engaging means of the leg material are engaged so that positioning during stacking can be performed smoothly.

Further, the present invention provides the above-mentioned metal medium-sized container, wherein a fixing bolt for fixing the lid to the container main body is press-fitted upward from a lower surface of a flange of the container main body, or By press-fitting from the upper surface downward, the container is prevented from rotating around the flange of the container body or the peripheral portion of the lid, and is attached.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on an embodiment shown in the drawings.

As shown in FIGS. 1 to 4, the metal container (A) of the present invention comprises a container body (10) and a lid (20).

The container body (10) has a bottom plate (12) and a flange (13) welded to a lower end and an upper end of a body (11) formed in a rectangular cylindrical shape by an appropriate welding method.

The body (11) is formed in a rectangular cylindrical shape by welding a plurality of (for example, four) side plates (14) of a flat metal plate into a predetermined shape by welding the side edges of the side plates. I have. The side plate (14) has a bent portion (14a) formed by bending one side edge into a curved surface, and the bent portion (14a) and the opposite side edge of the adjacent side plate (14) are connected to each other. By forming the body (11) by welding, the corners formed by the side plates (14) intersecting each other are formed into a rounded curved surface. The side plate (14) is formed with, for example, a substantially E-shaped reinforcing projection (15) curved to a curved surface. The reinforcing projection (15) causes strain stress due to heat and stress generated inside the container. Can be dispersed to prevent distortion.

The bottom plate (12) and the flange (13) are formed integrally by press-drawing a flat metal plate, and are separated after press-drawing.

The bottom plate (12) is press-formed into a shallow box shape having an upper end opened in a shape corresponding to the lower end opening of the body (11), and the corner corners and lower corners of the bottom plate (12) are press-formed. It is formed in a rounded curved surface. At the upper end of the bottom plate (12), a step (12a) is formed to fit into the lower end of the body (11), and the step (12a) of the bottom material (12) is connected to the lower end of the body (11). It is welded while being fitted to. Further, a plurality of (for example, two) leg members (16) are welded to the lower surface side of the bottom plate (12), and the leg members (16) can be used for mechanical loading by a forklift or the like.

The flange (13) is press-molded into a flat rectangular frame so as to have an angled cross-sectional shape and the corner corners correspond to the rounded corner corners of the body (11). It is lap welded to the upper end. A plurality of (for example, 16) fixing bolts (17) are attached to predetermined positions of the flange (13), and the lid (20) is fixed with the fixing bolts (17) and the tightening nuts (18). I do. When attaching the fixing bolt (17) to the predetermined position of the flange (13), install the mounting hole (19) at the predetermined position of the flange (13).
The fixing bolt (17) is inserted from the lower surface of the flange (13) into the mounting hole (19), and the screw portion of the fixing bolt (17) projects upward from the upper surface of the flange (13) to form the flange (13). The fixing bolt (17) is fixed at a predetermined position on the flange (13) by caulking the peripheral portion of the mounting hole of (1) to the screw base of the fixing bolt (17).

The lid (20) is formed into a predetermined shape by press-molding a flat metal plate, and is provided with respective fixing bolts (17) attached to the flange (13) around the slightly raised portion. A bolt insertion hole (21) is formed at the opposing position. The cover (20) is provided with a fixing bolt (17) having a bolt insertion hole (21) attached to a flange (13) of the container body (10).
The fastening nut (18) is fixed to the upper end of the container body (10) by screwing the fastening nut (18) to the fixing bolt (17) and tightening. Further, ribs (22) protruding upward are formed near the periphery of the lid (20), and a plurality of (for example, two) engaging projections (22a) are formed on the ribs (22) on both sides thereof. At the same time, a plurality of legs (16) provided on the bottom plate (12) of the container body (10) (the engaging projections (22a) of the lid (20))
(The same number as the above) is formed corresponding to the engaging projections (22a) of the lid (20), and when the medium-sized containers (A) are stacked, the engagement of the lid (20) is performed. The engagement recesses (16a) of the leg members (16) are fitted into the projections (22a) so that the medium-sized containers (A) can be positioned and stacked.

In the metal medium container (A) of the present invention configured as described above, the corner corner and the lower corner of the container body (10) are formed into a rounded curved shape by press molding. Corrosion and leakage due to liquid pools can be prevented, and cleaning is facilitated.

A side plate (14) serving as a container body (10);
Since the bottom plate (12) and the flange (13) are standardized by press molding and have high accuracy, the side plate (14), the bottom plate (12) and the flange (13) can be accurately welded, thereby achieving high quality. The metal medium-sized container (A) can be easily assembled and completed.

Further, the bottom plate (12) and the flange (13) of the container body (10) are integrally formed by press drawing, and are divided and used as the bottom plate (12) and the flange (13). Therefore, the number of processing steps and materials can be reduced, thereby improving productivity and significantly reducing costs.

Further, since the reinforcing projection (15) is formed in a curved surface on the side plate (14) serving as the body (11) of the container body (10), distortion due to heat generated at the time of welding is reduced. Distortion due to the pressure generated inside the container can be prevented, and the container can withstand the stress generated during handling and transportation, thereby improving the durability.

An engaging projection (22a) is formed on the reinforcing rib (22) of the lid (20), and an engaging recess is formed on the leg (16) of the bottom plate (12) of the container body (10). Since the (16a) is formed, the engaging projection (22a) formed on the lid (20) and the engaging recess (16a) formed on the leg (16) are engaged with each other to form the lid (20). The positioning of the legs (16) can be performed, whereby the medium containers (A) can be stacked smoothly, and the medium containers (A) can be stably stacked to significantly enhance safety. Can be.

Further, the flange (13) of the container body (10)
Since the fixing bolt (17) for fixing the lid (20) is attached with its screw part protruding upward from the upper surface of the flange (13), even after the lid (20) is fixed, It can be checked from the top surface of the lid (20) whether or not the tightening nut (18) is tightened to the fixing bolt (17), which makes it easy to confirm that the tightening nut (18) has been forgotten to be tightened. It is.

In the embodiment described above, the body (11) of the container body (10) is formed by four side plates (14), but the number of the side plates (14) is not one or four. But it doesn't matter.

In the above-described embodiment, the metal medium-sized container (A) has a square shape, but the present invention may be a round shape.

In the above-described embodiment, the flange (13) is overlapped and welded to the upper end of the body (11) of the container body (10), but the body (11) of the container body (10) is welded. The flange (13) may be butt-welded to the upper end of the shaft.

Further, in the above-described embodiment, the engaging rib (22a) is formed on the reinforcing rib (22) of the lid (20),
An engaging recess (16a) is formed in the leg member (16) of the bottom plate (12) of the container body (10), and an engaging recess is formed in the reinforcing rib (22) of the lid (20). Container body (10) bottom plate (1
An engaging projection may be formed on the leg member (16) included in 2).

In the above-described embodiment, the fixing bolt (17) for fixing the lid (20) is fixed to the flange (13) of the container body (10) by being prevented from turning.
The fixing bolt (17) may be fixed to the lid (20) by turning it around.

Further, a hanging hook may be attached to the lid (20) as needed.

Further, the leg member (16) provided on the bottom plate (12) of the container body (10) may be provided with irregularities for reinforcement.

[0034]

As described above, according to the metal medium-sized container of the present invention, since the corner portion is formed into a rounded curved shape by press molding, the contents can be easily discharged and the liquid can be discharged. Corrosion due to pools and the like can be prevented, and airtightness and cleanability are good. Further, since the body, bottom plate, and flange serving as the container body are press-molded with high precision, they can be welded accurately and can be assembled and completed with high quality. Productivity can be improved by forming the bottom plate and flange of the container body integrally by press drawing and dividing them after press drawing.
Significant cost reduction is possible. In addition, by forming a reinforcing convex portion in a curved surface on the side plate serving as the body of the container body, distortion due to heat generated at the time of welding and distortion generated due to pressure generated inside the container can be prevented, and handling of cargo can be prevented. Durability can be improved by withstanding the stress generated during transportation. Further, by forming an engagement convex portion and an engagement concave portion with the lid member and the leg member having the bottom plate of the container body,
The medium-sized containers can be stably stacked and safety can be improved.

[Brief description of the drawings]

FIG. 1 is a front view of a metal medium container of the present invention.

FIG. 2 is a plan view of a metal medium container of the present invention.

FIG. 3 is a bottom view of the metal medium-sized container of the present invention.

FIG. 4 is a perspective view of a metal container according to the present invention before mounting a fixing bolt of the container body.

FIG. 5 is a longitudinal sectional view of a container main body according to the metal medium-sized container of the present invention.

[Explanation of symbols]

 A Medium-sized metal container 10 Container body 11 Body 12 Bottom plate 12a Step 13 Flange 14 Side plate 14a Bend 15 Reinforcement projection 16 Leg 16a Engagement recess 17 Fixing bolt 18 Tightening nut 19 Mounting hole 20 Lid 21 Bolt insertion Hole 22 Reinforcement rib 22a Engagement recess

Claims (5)

[Claims] 1. A cylindrical body is formed by welding side edges of one or more side plates to each other by an appropriate welding method,
A container body formed by welding a bottom plate and an angled flange to a lower end and an upper end of the body by an appropriate welding method, and fixed to the flange of the container via a plurality of fixing bolts and tightening nuts. In the metal medium-sized container comprising the lid to be formed, the side plate serving as the body of the container body, the bottom plate, and the flange are each press-molded to form a corner portion into a rounded curved surface. And a metal medium-sized container. Medium-sized metal container. 2. The metal-made medium container according to claim 1, wherein the bottom plate and the flange of the container body are integrally formed by press molding, and are divided into each after press molding. 3. A reinforcing plate having a curved surface formed on a side plate serving as a body of the container body. The reinforcing protrusion reduces distortion caused by heat generated during welding and distortion caused by pressure generated inside the container. The medium-sized metal container according to claim 1 or 2, wherein the metal container is prevented from being prevented. 4. An engaging means (an engaging convex portion or an engaging concave portion) is formed on the lid body, and a leg member provided on a bottom plate of the container body is engaged with the leg member facing the engaging means on the lid body. Means (engaging concave portions or engaging convex portions) are formed so that the engaging means of the lid and the engaging means of the leg material are engaged during stacking so that positioning during stacking can be performed smoothly. The medium-sized metal container according to any one of claims 1 to 3, characterized in that: 5. The container main body by press-fitting a fixing bolt for fixing the lid to the container main body upward from the lower surface of the flange of the container main body, or by pressing the fixing bolt downward from the upper surface of the lid main body. The metal container according to any one of claims 1 to 4, wherein the metal container is attached to a peripheral portion of the flange or the lid body.